Normalize change file EOF formatting

Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/49663e4c-b82f-480e-a0a2-3823684c8168

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>

Author: Copilot

common/changes/@microsoft/rush/bump-azure-identity_2026-04-15-21-31.json

@@ -7,4 +7,4 @@
     }
   ],
   "packageName": "@microsoft/rush"
-}
+}

common/changes/@rushstack/rush-azure-storage-build-cache-plugin/bump-azure-dependencies_2026-04-15-21-31.json

@@ -7,4 +7,4 @@
     }
   ],
   "packageName": "@rushstack/rush-azure-storage-build-cache-plugin"
-}
+}